Transcriptomics

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BACH2 is repurposed following Treg lineage commitment to drive the functional quiescence and maintenance of resting Treg cells


ABSTRACT: In various tissues, cellular homeostasis is achieved by functionally quiescent stem cells which self renew while giving rise to differentiated progeny. Regulatory T (Treg) cells are composed of functionally quiescent resting Treg (rTreg) cells which differentiate into activated Treg (aTreg) cells upon antigen stimulation. How rTreg cells remain quiescent despite chronic exposure to cognate self- and foreign antigens is unclear. The transcription factor BACH2 is critical for early Treg lineage specification but its function following lineage commitment is unresolved. Here, we show Bach2 is highly expressed in lineage-committed rTreg cells but is downregulated in aTreg cells, and upon inflammation. BACH2 binds to AP-1 sites within Treg genomes and its high expression within rTreg cells functions to restrain their TCR-driven activation and differentiation into aTreg cells. As a consequence, cell-autonomous BACH2 expression is required following Treg lineage commitment for the functional quiescence and long-term maintenance of Treg cell populations and for immune homeostasis. This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE128176 | GEO | 2020/05/12

REPOSITORIES: GEO

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